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Always update mdadm/map when starting an array.
[thirdparty/mdadm.git] / Create.c
1 /*
2 * mdadm - manage Linux "md" devices aka RAID arrays.
3 *
4 * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Author: Neil Brown
22 * Email: <neilb@cse.unsw.edu.au>
23 * Paper: Neil Brown
24 * School of Computer Science and Engineering
25 * The University of New South Wales
26 * Sydney, 2052
27 * Australia
28 */
29
30 #include "mdadm.h"
31 #include "md_u.h"
32 #include "md_p.h"
33 #include <ctype.h>
34
35 int Create(struct supertype *st, char *mddev,
36 int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
37 char *name, char *homehost, int *uuid,
38 int subdevs, mddev_dev_t devlist,
39 int runstop, int verbose, int force, int assume_clean,
40 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int autof)
41 {
42 /*
43 * Create a new raid array.
44 *
45 * First check that necessary details are available
46 * (i.e. level, raid-disks)
47 *
48 * Then check each disk to see what might be on it
49 * and report anything interesting.
50 *
51 * If anything looks odd, and runstop not set,
52 * abort.
53 *
54 * SET_ARRAY_INFO and ADD_NEW_DISK, and
55 * if runstop==run, or raiddisks disks were used,
56 * RUN_ARRAY
57 */
58 int mdfd;
59 unsigned long long minsize=0, maxsize=0;
60 char *mindisc = NULL;
61 char *maxdisc = NULL;
62 int dnum;
63 mddev_dev_t dv;
64 int fail=0, warn=0;
65 struct stat stb;
66 int first_missing = subdevs * 2;
67 int second_missing = subdevs * 2;
68 int missing_disks = 0;
69 int insert_point = subdevs * 2; /* where to insert a missing drive */
70 int total_slots;
71 int pass;
72 int vers;
73 int rv;
74 int bitmap_fd;
75 int have_container = 0;
76 int container_fd = -1;
77 int need_mdmon = 0;
78 unsigned long long bitmapsize;
79 struct mdinfo info, *infos;
80 int did_default = 0;
81 unsigned long safe_mode_delay = 0;
82 char chosen_name[1024];
83
84 int major_num = BITMAP_MAJOR_HI;
85
86 memset(&info, 0, sizeof(info));
87
88 if (level == UnSet) {
89 /* "ddf" and "imsm" metadata only supports one level - should possibly
90 * push this into metadata handler??
91 */
92 if (st && (st->ss == &super_ddf || st->ss == &super_imsm))
93 level = LEVEL_CONTAINER;
94 }
95
96 if (level == UnSet) {
97 fprintf(stderr,
98 Name ": a RAID level is needed to create an array.\n");
99 return 1;
100 }
101 if (raiddisks < 4 && level == 6) {
102 fprintf(stderr,
103 Name ": at least 4 raid-devices needed for level 6\n");
104 return 1;
105 }
106 if (raiddisks > 256 && level == 6) {
107 fprintf(stderr,
108 Name ": no more than 256 raid-devices supported for level 6\n");
109 return 1;
110 }
111 if (raiddisks < 2 && level >= 4) {
112 fprintf(stderr,
113 Name ": at least 2 raid-devices needed for level 4 or 5\n");
114 return 1;
115 }
116 if (level <= 0 && sparedisks) {
117 fprintf(stderr,
118 Name ": This level does not support spare devices\n");
119 return 1;
120 }
121
122 if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) {
123 /* If given a single device, it might be a container, and we can
124 * extract a device list from there
125 */
126 mdu_array_info_t inf;
127 int fd;
128
129 memset(&inf, 0, sizeof(inf));
130 fd = open(devlist->devname, O_RDONLY);
131 if (fd >= 0 &&
132 ioctl(fd, GET_ARRAY_INFO, &inf) == 0 &&
133 inf.raid_disks == 0) {
134 /* yep, looks like a container */
135 if (st) {
136 rv = st->ss->load_super(st, fd,
137 devlist->devname);
138 if (rv == 0)
139 have_container = 1;
140 } else {
141 st = guess_super(fd);
142 if (st && !(rv = st->ss->
143 load_super(st, fd,
144 devlist->devname)))
145 have_container = 1;
146 else
147 st = NULL;
148 }
149 }
150 if (fd >= 0)
151 close(fd);
152 if (have_container) {
153 subdevs = 0;
154 devlist = NULL;
155 }
156 }
157 if (st && st->ss->external && sparedisks) {
158 fprintf(stderr,
159 Name ": This metadata type does not support "
160 "spare disks are create time\n");
161 return 1;
162 }
163 if (subdevs > raiddisks+sparedisks) {
164 fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
165 return 1;
166 }
167 if (!have_container && subdevs < raiddisks+sparedisks) {
168 fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
169 return 1;
170 }
171 if (bitmap_file && level <= 0) {
172 fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
173 map_num(pers, level)?:"given");
174 return 1;
175 }
176
177 /* now set some defaults */
178 if (layout == UnSet)
179 switch(level) {
180 default: /* no layout */
181 layout = 0;
182 break;
183 case 10:
184 layout = 0x102; /* near=2, far=1 */
185 if (verbose > 0)
186 fprintf(stderr,
187 Name ": layout defaults to n1\n");
188 break;
189 case 5:
190 case 6:
191 layout = map_name(r5layout, "default");
192 if (verbose > 0)
193 fprintf(stderr,
194 Name ": layout defaults to %s\n", map_num(r5layout, layout));
195 break;
196 case LEVEL_FAULTY:
197 layout = map_name(faultylayout, "default");
198
199 if (verbose > 0)
200 fprintf(stderr,
201 Name ": layout defaults to %s\n", map_num(faultylayout, layout));
202 break;
203 }
204
205 if (level == 10)
206 /* check layout fits in array*/
207 if ((layout&255) * ((layout>>8)&255) > raiddisks) {
208 fprintf(stderr, Name ": that layout requires at least %d devices\n",
209 (layout&255) * ((layout>>8)&255));
210 return 1;
211 }
212
213 switch(level) {
214 case 4:
215 case 5:
216 case 10:
217 case 6:
218 case 0:
219 case LEVEL_LINEAR: /* linear */
220 if (chunk == 0) {
221 chunk = 64;
222 if (verbose > 0)
223 fprintf(stderr, Name ": chunk size defaults to 64K\n");
224 }
225 break;
226 case 1:
227 case LEVEL_FAULTY:
228 case LEVEL_MULTIPATH:
229 case LEVEL_CONTAINER:
230 if (chunk) {
231 chunk = 0;
232 if (verbose > 0)
233 fprintf(stderr, Name ": chunk size ignored for this level\n");
234 }
235 break;
236 default:
237 fprintf(stderr, Name ": unknown level %d\n", level);
238 return 1;
239 }
240
241 if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
242 chunk, size, NULL, NULL, verbose>=0))
243 return 1;
244
245 /* now look at the subdevs */
246 info.array.active_disks = 0;
247 info.array.working_disks = 0;
248 dnum = 0;
249 for (dv=devlist; dv; dv=dv->next, dnum++) {
250 char *dname = dv->devname;
251 unsigned long long freesize;
252 if (strcasecmp(dname, "missing")==0) {
253 if (first_missing > dnum)
254 first_missing = dnum;
255 if (second_missing > dnum && dnum > first_missing)
256 second_missing = dnum;
257 missing_disks ++;
258 continue;
259 }
260 info.array.working_disks++;
261 if (dnum < raiddisks)
262 info.array.active_disks++;
263 if (st == NULL) {
264 struct createinfo *ci = conf_get_create_info();
265 if (ci)
266 st = ci->supertype;
267 }
268 if (st == NULL) {
269 /* Need to choose a default metadata, which is different
270 * depending on geometry of array.
271 */
272 int i;
273 char *name = "default";
274 for(i=0; !st && superlist[i]; i++) {
275 st = superlist[i]->match_metadata_desc(name);
276 if (st && !st->ss->validate_geometry
277 (st, level, layout, raiddisks,
278 chunk, size, dname, &freesize,
279 verbose > 0))
280 st = NULL;
281 }
282
283 if (!st) {
284 fprintf(stderr, Name ": device %s not suitable "
285 "for any style of array\n",
286 dname);
287 exit(2);
288 }
289 if (st->ss != &super0 ||
290 st->minor_version != 90)
291 did_default = 1;
292 } else {
293 if (!st->ss->validate_geometry(st, level, layout,
294 raiddisks,
295 chunk, size, dname,
296 &freesize,
297 verbose > 0)) {
298
299 fprintf(stderr,
300 Name ": %s is not suitable for "
301 "this array.\n",
302 dname);
303 fail = 1;
304 continue;
305 }
306 }
307
308 freesize /= 2; /* convert to K */
309 if (chunk) {
310 /* round to chunk size */
311 freesize = freesize & ~(chunk-1);
312 }
313
314 if (size && freesize < size) {
315 fprintf(stderr, Name ": %s is smaller that given size."
316 " %lluK < %lluK + metadata\n",
317 dname, freesize, size);
318 fail = 1;
319 continue;
320 }
321 if (maxdisc == NULL || (maxdisc && freesize > maxsize)) {
322 maxdisc = dname;
323 maxsize = freesize;
324 }
325 if (mindisc ==NULL || (mindisc && freesize < minsize)) {
326 mindisc = dname;
327 minsize = freesize;
328 }
329 if (runstop != 1 || verbose >= 0) {
330 int fd = open(dname, O_RDONLY);
331 if (fd <0 ) {
332 fprintf(stderr, Name ": Cannot open %s: %s\n",
333 dname, strerror(errno));
334 fail=1;
335 continue;
336 }
337 warn |= check_ext2(fd, dname);
338 warn |= check_reiser(fd, dname);
339 warn |= check_raid(fd, dname);
340 close(fd);
341 }
342 }
343 if (fail) {
344 fprintf(stderr, Name ": create aborted\n");
345 return 1;
346 }
347 if (size == 0) {
348 if (mindisc == NULL && !have_container) {
349 fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
350 return 1;
351 }
352 if (level > 0 || level == LEVEL_MULTIPATH
353 || level == LEVEL_FAULTY
354 || st->ss->external ) {
355 /* size is meaningful */
356 if (!st->ss->validate_geometry(st, level, layout,
357 raiddisks,
358 chunk, minsize,
359 NULL, NULL, 0)) {
360 fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
361 return 1;
362 }
363 size = minsize;
364 if (verbose > 0)
365 fprintf(stderr, Name ": size set to %lluK\n", size);
366 }
367 }
368 if (level > 0 && ((maxsize-size)*100 > maxsize)) {
369 if (runstop != 1 || verbose >= 0)
370 fprintf(stderr, Name ": largest drive (%s) exceed size (%lluK) by more than 1%%\n",
371 maxdisc, size);
372 warn = 1;
373 }
374
375 if (warn) {
376 if (runstop!= 1) {
377 if (!ask("Continue creating array? ")) {
378 fprintf(stderr, Name ": create aborted.\n");
379 return 1;
380 }
381 } else {
382 if (verbose > 0)
383 fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
384 }
385 }
386
387 /* If this is raid4/5, we want to configure the last active slot
388 * as missing, so that a reconstruct happens (faster than re-parity)
389 * FIX: Can we do this for raid6 as well?
390 */
391 if (assume_clean==0 && force == 0 && first_missing >= raiddisks) {
392 switch ( level ) {
393 case 4:
394 case 5:
395 insert_point = raiddisks-1;
396 sparedisks++;
397 info.array.active_disks--;
398 missing_disks++;
399 break;
400 default:
401 break;
402 }
403 }
404 /* For raid6, if creating with 1 missing drive, make a good drive
405 * into a spare, else the create will fail
406 */
407 if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
408 st->ss->external == 0 &&
409 second_missing >= raiddisks && level == 6) {
410 insert_point = raiddisks - 1;
411 if (insert_point == first_missing)
412 insert_point--;
413 sparedisks ++;
414 info.array.active_disks--;
415 missing_disks++;
416 }
417
418 if (level <= 0 && first_missing < subdevs * 2) {
419 fprintf(stderr,
420 Name ": This level does not support missing devices\n");
421 return 1;
422 }
423
424 /* We need to create the device */
425 mdfd = create_mddev(mddev, name, autof, LOCAL, chosen_name);
426 if (mdfd < 0)
427 return 1;
428
429 vers = md_get_version(mdfd);
430 if (vers < 9000) {
431 fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
432 goto abort;
433 } else {
434 mdu_array_info_t inf;
435 memset(&inf, 0, sizeof(inf));
436 ioctl(mdfd, GET_ARRAY_INFO, &inf);
437 if (inf.working_disks != 0) {
438 fprintf(stderr, Name ": another array by this name"
439 " is already running.\n");
440 goto abort;
441 }
442 }
443
444 /* Ok, lets try some ioctls */
445
446 info.array.level = level;
447 info.array.size = size;
448 info.array.raid_disks = raiddisks;
449 /* The kernel should *know* what md_minor we are dealing
450 * with, but it chooses to trust me instead. Sigh
451 */
452 info.array.md_minor = 0;
453 if (fstat(mdfd, &stb)==0)
454 info.array.md_minor = minor(stb.st_rdev);
455 info.array.not_persistent = 0;
456
457 if ( ( (level == 4 || level == 5) &&
458 (insert_point < raiddisks || first_missing < raiddisks) )
459 ||
460 ( level == 6 && (insert_point < raiddisks
461 || second_missing < raiddisks))
462 ||
463 ( level <= 0 )
464 ||
465 assume_clean
466 ) {
467 info.array.state = 1; /* clean, but one+ drive will be missing*/
468 info.resync_start = ~0ULL;
469 } else {
470 info.array.state = 0; /* not clean, but no errors */
471 info.resync_start = 0;
472 }
473 if (level == 10) {
474 /* for raid10, the bitmap size is the capacity of the array,
475 * which is array.size * raid_disks / ncopies;
476 * .. but convert to sectors.
477 */
478 int ncopies = ((layout>>8) & 255) * (layout & 255);
479 bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
480 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
481 } else
482 bitmapsize = (unsigned long long)size * 2;
483
484 /* There is lots of redundancy in these disk counts,
485 * raid_disks is the most meaningful value
486 * it describes the geometry of the array
487 * it is constant
488 * nr_disks is total number of used slots.
489 * it should be raid_disks+spare_disks
490 * spare_disks is the number of extra disks present
491 * see above
492 * active_disks is the number of working disks in
493 * active slots. (With raid_disks)
494 * working_disks is the total number of working disks,
495 * including spares
496 * failed_disks is the number of disks marked failed
497 *
498 * Ideally, the kernel would keep these (except raid_disks)
499 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
500 * So for now, we assume that all raid and spare
501 * devices will be given.
502 */
503 info.array.spare_disks=sparedisks;
504 info.array.failed_disks=missing_disks;
505 info.array.nr_disks = info.array.working_disks
506 + info.array.failed_disks;
507 info.array.layout = layout;
508 info.array.chunk_size = chunk*1024;
509
510 if (name == NULL || *name == 0) {
511 /* base name on mddev */
512 /* /dev/md0 -> 0
513 * /dev/md_d0 -> d0
514 * /dev/md/1 -> 1
515 * /dev/md/d1 -> d1
516 * /dev/md/home -> home
517 * /dev/mdhome -> home
518 */
519 /* FIXME compare this with rules in create_mddev */
520 name = strrchr(mddev, '/');
521 if (name) {
522 name++;
523 if (strncmp(name, "md_d", 4)==0 &&
524 strlen(name) > 4 &&
525 isdigit(name[4]) &&
526 (name-mddev) == 5 /* /dev/ */)
527 name += 3;
528 else if (strncmp(name, "md", 2)==0 &&
529 strlen(name) > 2 &&
530 isdigit(name[2]) &&
531 (name-mddev) == 5 /* /dev/ */)
532 name += 2;
533 }
534 }
535 if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
536 goto abort;
537
538 total_slots = info.array.nr_disks;
539 sysfs_init(&info, mdfd, 0);
540 st->ss->getinfo_super(st, &info);
541
542 if (did_default && verbose >= 0) {
543 if (is_subarray(info.text_version)) {
544 int dnum = devname2devnum(info.text_version+1);
545 char *path;
546 int mdp = get_mdp_major();
547 struct mdinfo *mdi;
548 if (dnum > 0)
549 path = map_dev(MD_MAJOR, dnum, 1);
550 else
551 path = map_dev(mdp, (-1-dnum)<< 6, 1);
552
553 mdi = sysfs_read(-1, dnum, GET_VERSION);
554
555 fprintf(stderr, Name ": Creating array inside "
556 "%s container %s\n",
557 mdi?mdi->text_version:"managed", path);
558 sysfs_free(mdi);
559 } else
560 fprintf(stderr, Name ": Defaulting to version"
561 " %s metadata\n", info.text_version);
562 }
563
564 map_update(NULL, fd2devnum(mdfd), info.text_version,
565 info.uuid, chosen_name);
566
567 if (bitmap_file && vers < 9003) {
568 major_num = BITMAP_MAJOR_HOSTENDIAN;
569 #ifdef __BIG_ENDIAN
570 fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
571 " between different architectured. Consider upgrading the Linux kernel.\n");
572 #endif
573 }
574
575 if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
576 if ((vers%100) < 2) {
577 fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
578 goto abort;
579 }
580 if (!st->ss->add_internal_bitmap(st, &bitmap_chunk,
581 delay, write_behind,
582 bitmapsize, 1, major_num)) {
583 fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
584 goto abort;
585 }
586 bitmap_file = NULL;
587 }
588
589
590 sysfs_init(&info, mdfd, 0);
591
592 if (st->ss->external && st->subarray[0]) {
593 /* member */
594
595 /* When creating a member, we need to be careful
596 * to negotiate with mdmon properly.
597 * If it is already running, we cannot write to
598 * the devices and must ask it to do that part.
599 * If it isn't running, we write to the devices,
600 * and then start it.
601 * We hold an exclusive open on the container
602 * device to make sure mdmon doesn't exit after
603 * we checked that it is running.
604 *
605 * For now, fail if it is already running.
606 */
607 container_fd = open_dev_excl(st->container_dev);
608 if (container_fd < 0) {
609 fprintf(stderr, Name ": Cannot get exclusive "
610 "open on container - weird.\n");
611 goto abort;
612 }
613 if (mdmon_running(st->container_dev)) {
614 if (verbose)
615 fprintf(stderr, Name ": reusing mdmon "
616 "for %s.\n",
617 devnum2devname(st->container_dev));
618 st->update_tail = &st->updates;
619 } else
620 need_mdmon = 1;
621 }
622 rv = set_array_info(mdfd, st, &info);
623 if (rv) {
624 fprintf(stderr, Name ": failed to set array info for %s: %s\n",
625 mddev, strerror(errno));
626 goto abort;
627 }
628
629 if (bitmap_file) {
630 int uuid[4];
631
632 st->ss->uuid_from_super(st, uuid);
633 if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
634 delay, write_behind,
635 bitmapsize,
636 major_num)) {
637 goto abort;
638 }
639 bitmap_fd = open(bitmap_file, O_RDWR);
640 if (bitmap_fd < 0) {
641 fprintf(stderr, Name ": weird: %s cannot be openned\n",
642 bitmap_file);
643 goto abort;
644 }
645 if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
646 fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n",
647 mddev, strerror(errno));
648 goto abort;
649 }
650 }
651
652 infos = malloc(sizeof(*infos) * total_slots);
653
654 for (pass=1; pass <=2 ; pass++) {
655 mddev_dev_t moved_disk = NULL; /* the disk that was moved out of the insert point */
656
657 for (dnum=0, dv = devlist ; dv ;
658 dv=(dv->next)?(dv->next):moved_disk, dnum++) {
659 int fd;
660 struct stat stb;
661 struct mdinfo *inf = &infos[dnum];
662
663 if (dnum >= total_slots)
664 abort();
665 if (dnum == insert_point) {
666 moved_disk = dv;
667 }
668 if (dnum == insert_point ||
669 strcasecmp(dv->devname, "missing")==0)
670 continue;
671
672 switch(pass) {
673 case 1:
674 *inf = info;
675
676 inf->disk.number = dnum;
677 inf->disk.raid_disk = dnum;
678 if (inf->disk.raid_disk < raiddisks)
679 inf->disk.state = (1<<MD_DISK_ACTIVE) |
680 (1<<MD_DISK_SYNC);
681 else
682 inf->disk.state = 0;
683
684 if (dv->writemostly == 1)
685 inf->disk.state |= (1<<MD_DISK_WRITEMOSTLY);
686
687 if (st->ss->external && st->subarray[0])
688 fd = open(dv->devname, O_RDWR);
689 else
690 fd = open(dv->devname, O_RDWR|O_EXCL);
691
692 if (fd < 0) {
693 fprintf(stderr, Name ": failed to open %s "
694 "after earlier success - aborting\n",
695 dv->devname);
696 goto abort;
697 }
698 fstat(fd, &stb);
699 inf->disk.major = major(stb.st_rdev);
700 inf->disk.minor = minor(stb.st_rdev);
701
702 remove_partitions(fd);
703 st->ss->add_to_super(st, &inf->disk,
704 fd, dv->devname);
705 st->ss->getinfo_super(st, inf);
706 safe_mode_delay = inf->safe_mode_delay;
707
708 /* getinfo_super might have lost these ... */
709 inf->disk.major = major(stb.st_rdev);
710 inf->disk.minor = minor(stb.st_rdev);
711 break;
712 case 2:
713 inf->errors = 0;
714 rv = 0;
715
716 rv = add_disk(mdfd, st, &info, inf);
717
718 if (rv) {
719 fprintf(stderr,
720 Name ": ADD_NEW_DISK for %s "
721 "failed: %s\n",
722 dv->devname, strerror(errno));
723 st->ss->free_super(st);
724 goto abort;
725 }
726 break;
727 }
728 if (dv == moved_disk && dnum != insert_point) break;
729 }
730 if (pass == 1) {
731 st->ss->write_init_super(st);
732 flush_metadata_updates(st);
733 }
734 }
735 free(infos);
736 st->ss->free_super(st);
737
738 /* param is not actually used */
739 if (level == LEVEL_CONTAINER)
740 /* No need to start */
741 ;
742 else if (runstop == 1 || subdevs >= raiddisks) {
743 if (st->ss->external) {
744 switch(level) {
745 case LEVEL_LINEAR:
746 case LEVEL_MULTIPATH:
747 case 0:
748 sysfs_set_str(&info, NULL, "array_state",
749 "active");
750 need_mdmon = 0;
751 break;
752 default:
753 sysfs_set_str(&info, NULL, "array_state",
754 "readonly");
755 break;
756 }
757 sysfs_set_safemode(&info, safe_mode_delay);
758 } else {
759 mdu_param_t param;
760 if (ioctl(mdfd, RUN_ARRAY, &param)) {
761 fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
762 strerror(errno));
763 Manage_runstop(mddev, mdfd, -1, 0);
764 goto abort;
765 }
766 }
767 if (verbose >= 0)
768 fprintf(stderr, Name ": array %s started.\n", mddev);
769 if (st->ss->external && st->subarray[0]) {
770 if (need_mdmon)
771 start_mdmon(st->container_dev);
772
773 ping_monitor(devnum2devname(st->container_dev));
774 close(container_fd);
775 }
776 } else {
777 fprintf(stderr, Name ": not starting array - not enough devices.\n");
778 }
779 close(mdfd);
780 return 0;
781
782 abort:
783 if (mdfd >= 0)
784 close(mdfd);
785 return 1;
786 }
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